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<br />Pa ge 37 <br /> <br />measurements will be taken. <br /> <br />4. Acoustic sounder wind profiles. Continuous measurements <br />will be taken. <br /> <br />5. Ground microphysics station. This unit will be operated <br />throughout each period with precipitation. <br /> <br />6. Ice crystal photography. Ice crystal photographs will be <br />taken infrequently on a non-interference basis with higher <br />priority observations. As a minimum, one will be taken near <br />the time of each magnetic tape change for the aspirated 2D-C <br />probe. <br />7. Precipitation gauge network. Continuous measurements. <br />8. Pibal observations of winds. Observations will be taken <br />twice daily (one early morning, one late afternoon) out- <br />side of intensive research periods. Additional pibals may <br />be requested by the Bureau site coordinator during inten- <br />sive research periods. Weather conditions permitting, <br />each pibal will be tracked for a 20 minute period. <br />9. Tethersonde observations of near-surface winds, temperature, <br />rel at i ve humi dity, and pressure (as requested by thE! Bu reau <br />site coordinator). <br />10. Meteorological data collection. Continuous data will be <br />